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Titolo:
Multiple insemination increases reproductive success of female Montandon'snewt (Triturus montandoni, Caudata, Salamandridae)
Autore:
Osikowski, A; Rafinski, J;
Indirizzi:
Jagiellonian Univ, Inst Zool, Dept Comparat Anat, PL-30060 Krakow, Poland Jagiellonian Univ Krakow Poland PL-30060 t Anat, PL-30060 Krakow, Poland
Titolo Testata:
BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY
fascicolo: 2-3, volume: 49, anno: 2001,
pagine: 145 - 149
SICI:
0340-5443(200101)49:2-3<145:MIIRSO>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
RED-SPOTTED NEWT; DROSOPHILA-MELANOGASTER; GENUS TRITURUS; SPERM STORAGE; SMOOTH NEWT; SPERMATHECAE; VULGARIS; INSECTS;
Keywords:
multiple matings; polyandry; Triturus montandoni; newts;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
32
Recensione:
Indirizzi per estratti:
Indirizzo: Rafinski, J Jagiellonian Univ, Inst Zool, Dept Comparat Anat, Ul Ingardena6, PL-30060Krakow, Poland Jagiellonian Univ Ul Ingardena 6 Krakow Poland PL-30060 oland
Citazione:
A. Osikowski e J. Rafinski, "Multiple insemination increases reproductive success of female Montandon'snewt (Triturus montandoni, Caudata, Salamandridae)", BEHAV ECO S, 49(2-3), 2001, pp. 145-149

Abstract

The adaptive significance of multiple matings for females is a matter of much controversy. In insects, supplying the female's sperm reserves with portions of fresh spermatozoa may be the main function of multiple matings. This simple explanation may also be applied to other animals which produce large numbers of eggs over prolonged periods of time. We tested the fertilityinsurance hypothesis in Montandon's newt (Triturus montandoni, Amphibia, Salamandridae). T. montandoni females are inseminated internally by spermatophores they have picked up, and subsequently lay eggs fertilized by spermatozoa released from the spermatheca. We compared the reproductive success ofsingly and multiply inseminated females of Montandon's newt in the laboratory. Multiply inseminated females laid more eggs and had a lower percentageof non-developing eggs than females who mated only once. Our data suggest that remating increases the reproductive success of multiply inseminated females by replenishing sperm reserves in the spermatheca or by supplying females with fresh portions of spermatozoa with high fertilizing capacity.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 04:06:19